Aspirator.



C. W. NANCE.

ASPIBATOB. rPLIdATIoN FILED In. 27, 190s.

y vPatented Dec.22,f19os.

Fig

2 SHEETS-SHEET 2. f

AFig @L vtion of the CHARLES WESLEY ivANcE, OFSYDNEY, NEWSGUTHWALES, AUSTRALIA.

fNQfeozace. i

To all 'whom it may concern:

Beit known that CHARLEsWEsL'EY NANQE, a citizen 4of the Commonwealth of Australia, residing at No. 348 Oxford street, Paddin' ton, Sydney, in the State of New South ales, in theCornm'onWealth of Australia, provision merchant, have invented certainnew and useful .lm rovements fin `Aspirators; and I do4 hereby eclare the followinggto be a-vfull, clear, and exact descri 'nvention, such as will enab e others skilled AThe object of this invention is to an eflicient means, whereby the comp ete ex,- haustion of the air, vapor, and gases contained in herinetically sealed chambers or.

vessels, together with their contentsfs'uch vas articles of food-'may be accomplished with; greater-expedition andv thoroughnessv than heretofore,

so as to insure a wholly lvacuous condition Withinsuch vessels.

The main'rnuin point of 'vacuity y'to' be reached by the use -o'l' this invention will at all times coincide with the baronietrical reading which is vlocallythe natural result of existing atmospheric pressures. 'Such coincidence canbe scientificall regarded as the practicalattainment ofM tie' maximum vacuum.

By eX veriment it has 'been ascertained thatartic es of food, such as eg s, meat, fish, -and -such like, placed in sui-tab y Sealed vesselsandoperated upon by this'invention', are

Wholly freed from the gases which ordinarily As an ex- "sa cular valve seating G Vand flexible valve C1,

produce deterioration and decay. l austing appliance, this invention isalso apv plic'able to'other useful purposes, such, for

instance, as. an aid to the satisfactory completion of laboratory tests'essential to the success of scientilic research and investigation, also as a mechanical adjunct to pneuinatic carrier systems, and likewise in ,the production ol' perfectly constructed incandescent electric bulbs, in 'all ci which .the principle of exhaustion or extraction of air, vapor, and gases is involved.

Referring to thc accoi'iipanying drawings which forni part oll this spccilication, and in which similar letters are used throughout the ldifferent .views lto indicate similar parts: Figure 1 is a plan of the appliance. Fig. 2 is agvertical sectional elevation on line L-ct of Fig. l. Fig. 3 is a transverse sectional elevation on line b -b of Fig. 1. Fig. 4 is a de- Specification 'of Letters Patent. Application aia'narcii 27; 190s, seria-ino. 423,588. l'

in the .art to Which itapper- -tainsv to ni-ake'and use the same.- 1 Y rov'ide4 v(broken away) and the nut 'Patented' I "tail, vertical longitudinal central section of the chamber hereinafter described; Fig. 5 iS a detail, longitudinal, verticalcentral sec-4 4valve and 'valve seatingandsun ry proximate parts; Fig/6 is `a detail, longitudinal and valve seat; Fig. 8 is a detail side eleva-` tion-o1 the same Fig. 9 is a detail, longitudinal, vertical'section of the exit tube N and the 'nose pieced; Fig. -91L represents a detailed vievv of the parts J, N and `their con nections siinilar to that in Fig. 9, but on'a larger scale and with some of' the minor elei'nents detached, Fig. lOvis a detail, central, longitudinal section of the casing O, the plug detail end elevation of .the 'frictionl'errule K' and Fig. 12 is-a detail, longitudinal, central lsection of `the tail Vpiece ol the outletv pipefitting thereon., The stationary part of the induction chamber A, seen enlarged in Fig. 5, associated with the mixing chamber B and the circular valve seating() With its leXible valve C1 clamped on theliquid tube D, the seating being likewise secured beneath the fixed lugs C2. The sole plate E is used to securethe chamber A to the ilanges E1 formed as in Figs. .1, 2, and 3.

The removable parts consist'of the' cushioning and com ress'ion chamber G, as in'Fig.. 4,'the adjustab e plug H with its conical pasfre or central bore l, as in Fig. 6. The cirsecured by the nut C3 to the liquid tube lD, are likewiscrem'ovable, as shown in Figs. 7

liquidtubc D. behind the reseating valve C1, the friction ferrule K, the screwed-Washer L which retains thcfferrule in place, the bridled collar M fitting on the nose piece l and inclosing both the-"ferrule K and the Washer L. Bands Ml connect the said collars and have the saine internalscrew to receive the washer L which is adjustable. The exit tube N is retained. in the bridled collar M, and- WhenV l'ully seated as shown in Figs. 2 and 9 is kept in place by the adj ustable plug lil, the out Ward ta er Y1 coinciding with the taper of the conical tube I. The plug is shown in dotted lines in Fig. 9. The other removable parts -are the easing O which, in combination and S. Also the nose piece J screwhd to the Dee-22, 190s.

tion of the liquid tube, the sole late, the l section of the plug H hereinafter described; Fig. 7 is a detail front elevation of the valve H being shown in dotted lines g Fig. 11 isa i appliance is the on the fluid containerl or liquid reservoir F,

,sie

with the concave 'outer face H1, forms the elnillition chamber P, whose outlet pipe P1 is provided with a contracted tail piece Q (Wide lt is arranged in this invention that theimpcllcnt liquid shall bc primarily stored in the container l" ready for circulation by suitable pumps to be connected to the suction and c elivery pipes, U and V, to secure the reuse of the liquid. yOil is regarded .as a referablc fluid to water because of its equab e temperature, but any fluid used is caused to pass through the tubes F1 of the removable iceboxes F1, to obtain a suitable temperature.

1n the chamber G the liquid is rendered more forceful, its flow regular, and the-pressure constant, by the air cushion which forms in the vessel T, also, pressure is malntained on the cup leather S'located under the in-4 verted cel G1 to prevent leakage. The conccntration of the fluid into the tube D is accomplished through the funnel shaped mouth The diameter of the said tube bears a certain essential relation to the diameter of the pipe V, in the ratio of 1 to 1.25, to obtain the required velocity in the nose piece J whose internal diameter is in the ratio of .5 to 1 of the tube D. The friction ferrule K, to be regulated and secured as described, has its discharging orifice K1 (as in Figs. 9at and 11) formed with serrations which give the maximum amount of friction and create V shaped channels in the issuing stream which thoroughly infold the alr and gases drawn through the induction chamber A as the flexible valve C1 is unseated. 1

It is essential to secure the rapid movement of the flexible valve and to establish equilibrium of pressure in chambers A and B, and for that purpose minute chases (shown dotted in Fig. 7) are cut on the working face of the valve seating C, extending from the ports C4 to a little beyond the margin of the valve C1. The aggregate areasof the orts C1 are equal to the area of the main in et port A1, which also coincides with the area ol' the induction pipe A1. .4

li`igs.,2, 5, and 9 show, in dotted lines, the flexible valve C1 unseated, its curved formation being serviceable to direct a cylindrical flow of the air and gases into the mixin chamber B, whose concave end H2 is formed by the inner face of the adjustable plug H screwed into the chamber. The plugs central conical tube J is adapted to receive and secure the protruding exit tube N with the associated parts as before mentioned, its

' open portion is an essential and peculiar enlargement of the chamber B, and controls the inilow'of the air and gases, as shown by the arrows in Fig. 2. Moreover, whenever back pressure occurs from any cause, and the fluid escapes into it from either of the tubes .l and N, 0r from both of them, it becomes serviceable in so directingthe flow that it will instantly impingc against valve C1, rapidly re-seating it, and thereby preventing 'the flooding of the induction chamber A.

The combined liquid, air, and gases escaping into the ebullition chamber l?, are first allowed to expand in the taper tail part l1, the open orifice being of the same diameter as the exit tube N. ln the outlet pipe P1 is formed a circular re-action cavity P1 to hinder the back flow ot the li( uid. 'lhe pipe is the same diameter as the? clivery pipe V, and is directed into an air-releasing chamber F3, the contracted outlet Q discharging into the conical saucer F4. The aerated liquid, in its upward movement, encoui'iters the .floating double screens )V by which the particles are separated,l the fluid passing over the li F5 and fallingon to the screen X, is clarifie in the well Y, from whence it passes into the container F for re-use. Draining cocks may be provided for chambers B, G, and P, for the escape of the impellent liquid, and a relief cock may also be provided for the air vessel T.

1t `is essential, in'order tov obtain thorough efliciency with the appliance, first, that the friction ferrule K'shou d be rightly adjusted according to the force of the imell'ent liquid, secondly, that theconical p ug Il should be fully seated upon the conical end N1 of the exit tube N, and, lastly, that the contracted tail piece Q should be `adjusted by the traveling nut R to the required dimension, which is to be ascertained by experiment, the said opening varying the force withwhich the impellent liquid is driven.

Having now described my invention, what I claim as new and desire to secure by Letters Patent is':

1. In an aspirator an induction chamber having an inlet port, in combination with a liquid tube, a 'valvev seating provided with ports in its working face, means for retaining said valve seating in place, a flexible valve adapted to fit on said valve seating, a mixing chamber arrangedv tor receive, the discharge of said liquid tube vand fittedl on one end of said induction chamber, a plug removably ittin into saidmixing chamber, a casing detac ably fitting on said mixing chamber 'and surrounding said plug, a cushioning and compression chamber detachably fitted on the end of said induction chamber opposite to said casing substantially as set forth.

2. An air induction chamber and mixing chamber and a valve controlling communication between them, in combination vwith a detachable compression chamber, au air chamber communicating therewith but according to nut screwed on said tail piece forregulating otherwise closed, packing for the joint of said detachable chamber arranged to be tightened by the pressure of the air in said-air chamber, and a liquid pipe from said compression chamber which pipe communicates near its forward end with said mixing chamber in order that the mingled air and liquid may flow out together, the apparatus being adapted to allow the subsequent escape of the air from the liquid substantially as set forth.

3. The removable nose-piece of an aspirator, in combination with an exit pipe in line with said. nose-piece and 'connecting devices between these parts consisting of a friction ferrule, a Washer, a bridled collar and intervening band, the said collar and band being internally screw-threaded to fit said Washer, and an adjustable plug having a conical tube or bore formed therein, adapted tovreceive said `pipe exit.

4. In an aspirator, in combination with a mixing chamber, a removable plug fitting therein and having a conoidal bore tapering continuously from end to end and concavities in its ends independent of said tapering bore and a casing surrounding one of the ends of said plug substantially as set forth.

5,-ln an aspirator, a casing formin an ebullition chamber, a movable' plug within said chamber 'and having a bore or passage through it, an outlet pipe from said chamber having a slitted tapering tail piece and a the l(ontra'cton thereof substantially as set fort 6. ln an aspirator, an outlet pi e tapered,

longitudinally slitted, and screw t readed at itsdischarging end, in combination with a nut turning on the screw-threaded part of the same to increase or diminish the contraction thereof substantially as set forth. 7. In an aspirator `the combination with an outlet pipe of an air releasing chamber having a conical saucer and floating screens substantiallyas set forth.

8. ln an aspirator, a liquid reservoir, a sole plate resting on the same, removable ice boxes in said chamber and a suction pipe communicating with the latter and supplying the operative parts of the as irator, the said sole plate being provided Wit flanges fitting the ed es of said liquid reservoir to hold the said so e plate in place.

9. In an aspirator, a li uid reservoir in combination with an air re easing chamber,

floating screens, a well screen and a well, A

said well-screen and well being located within and connected to saidliquid reservoir.

substantially as set forth.

In testimony whereof, I have signed my name to this specification in the presence of two subscribing Witnesses.

CHARLES WESLEY Nfl-'Non Witnesses: l

H. A. IENES, HARRY A. SMnnLnY.` 

